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