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