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