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