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