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