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