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