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