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