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