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