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