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)(20,24)(21,26)(22,25)(23,30,38,34)(28,46,31,45)(32,41)(33,40)(35,44)(36,42)(37,47,39,48)(1,2)(3,10)(4,7)(5,8)(6,9)(11,15)(12,14)(13,16)(17,19)(18,23)(20,31)(21,34)(22,29)(24,39)(25,38)(26,43)(27,42)(28,32)(30,36)(33,47)(35,48)(37,41)(40,46)(44,45) involution — undirected(1,3,5,9)(2,6,8,10)(4,12,13,11)(7,15,16,14)(17,20,22,32)(18,24,25,41)(19,28,29,31)(21,35,36,33)(23,37,38,39)(26,44,42,40)(27,45,43,46)(30,48,34,47)(1,4,5,13)(2,7,8,16)(3,11,9,12)(6,14,10,15)(18,25)(20,32)(23,38)(26,42)(27,43)(28,31)(33,35)(47,48)(2,8)(6,10)(7,16)(14,15)(19,29)(23,38)(27,43)(28,31)(30,34)(37,39)(45,46)(47,48) 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.