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