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