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