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