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