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