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