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