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