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