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