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