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