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