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