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