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