One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,10)(4,5)(6,7)(8,11)(9,14)(12,13)(15,16)(17,18,23,25)(19,24,29,32)(20,26,27,21)(22,28,31,30)(33,34,39,38)(35,40,42,37)(36,41,45,46)(43,47,48,44)(2,7)(3,11)(4,14)(13,15)(17,19,23,29)(18,24,25,32)(20,28,27,30)(21,22,26,31)(33,35)(34,40)(36,43)(37,38)(39,42)(41,47)(44,46)(45,48)(2,7)(4,14)(8,10)(12,16)(18,25)(19,29)(21,26)(28,30)(35,42)(37,40)(43,48)(44,47) involution — undirected(1,3,6,11)(2,8,7,10)(4,12,14,16)(5,15,9,13)(17,20,23,27)(18,26,25,21)(19,30,29,28)(22,32,31,24)(33,36)(34,41)(35,43)(37,44)(38,46)(39,45)(40,47)(42,48)(1,4)(2,9)(3,12)(5,7)(6,14)(8,13)(10,15)(11,16)(17,21,23,26)(18,27,25,20)(19,31,29,22)(24,28,32,30)(33,37)(34,35)(36,44)(38,42)(39,40)(41,43)(45,47)(46,48)(1,5,6,9)(2,4,7,14)(3,13,11,15)(8,16,10,12)(17,22,23,31)(18,28,25,30)(19,26,29,21)(20,24,27,32)(33,38,39,34)(35,37,42,40)(36,41,45,46)(43,47,48,44)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.