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