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