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