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