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