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