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