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