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