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