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