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