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