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