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