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