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