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