One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9)(3,7,12,8)(4,5,14,16)(10,11,13,15)(17,18,23,27)(19,22,28,24)(20,29,31,25)(21,26,32,30)(33,34)(35,37)(36,44)(38,42)(39,41)(40,46)(43,47)(45,48)(1,3)(2,7)(4,13)(5,15)(6,12)(8,9)(10,14)(11,16)(17,19,23,28)(18,24,27,22)(20,21,31,32)(25,26,29,30)(33,34,38,42)(35,37,41,39)(36,40,46,44)(43,45,48,47)(1,3,6,12)(2,8,9,7)(4,13,14,10)(5,11,16,15)(17,20,23,31)(18,25,27,29)(19,21,28,32)(22,30,24,26)(33,35,38,41)(34,39,42,37)(36,43,46,48)(40,47,44,45)(1,3)(2,7)(4,10)(5,11)(6,12)(8,9)(13,14)(15,16)(17,20)(18,25)(19,21)(22,30)(23,31)(24,26)(27,29)(28,32)(33,36)(34,40)(35,43)(37,45)(38,46)(39,47)(41,48)(42,44) involution — undirected(1,4)(2,5)(3,10)(6,14)(7,11)(8,15)(9,16)(12,13)(17,21)(18,26)(19,20)(22,29)(23,32)(24,25)(27,30)(28,31)(33,34)(35,39)(36,40)(37,41)(38,42)(43,47)(44,46)(45,48) involution — undirected(1,5)(2,4)(3,11)(6,16)(7,10)(8,13)(9,14)(12,15)(17,22,23,24)(18,19,27,28)(20,30,31,26)(21,29,32,25)(33,37,38,39)(34,41,42,35)(36,45,46,47)(40,48,44,43)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.