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