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