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