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