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