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