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