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