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