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