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