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