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