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